Leiden University Student Repository

Bent, Eli van der (2024)

On the Miniaturization of the Magnetic Paul Trap

Master thesis | Physics (MSc)

In this thesis we present an experimental realisation of a double loop type Magnetic Paul Trap. We show that a microgram heavy NdFeB permanent magnet can stably be levitated for hours at room temperature in this trap. Magnetic levitation of a magnetized particle is theoretically possible with this trap by generating opposed alternating magnetic fields. We show the fabrication of a printed circuit structure capable of producing these fields, as well as the engineering behind the realisation of the trap. Both by optical and magnetic readout we characterize the motion of the trapped magnet and show that its center of mass motion frequencies $\omega_z = 2\omega_{x,y} \approx 20Hz$. We characterize the damping on these modes and find that at low pressure the quality factor is strongly limited (to $Q \approx 90$) by coupling to the environment through generation of Eddy currents.

magnetic, levitation, Magnetic Paul Trap, trapping

Author

Bent, Eli van der

Faculty

Faculty of Science

Specialisation

QMO

Supervisors

Janse, M.A.
Hensen, B.J.

ECTS Credits

36

Language

en